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Traffic congestion has increased dramatically; today even a normal driver can stop and start up to 18,000 times a year*. That’s annoying, but worse, it slowly damages your engine – permanently.

Uniquely, Castrol’s breakthrough MAGNATEC DUALOCK molecules cling to critical engine parts and lock together to:


  • Form a powerful force field of protection 
  • Dramatically reduce both warm-up** and stop-start wear by 50%*** 
  • Offer non-stop protection from every start.
Castrol MAGNATEC 5W-40 C3 has been specially formulated to deliver outstanding protection for the latest engines fitted with after treatment devices such as diesel particulate filters and 3 way catalysts.


* Global average from 50 cities, Castrol MAGNATEC STOP-START Index 2014
** Tested vs the API SN wear limit in the Sequence IVA test.
*** Tested versus the ACEA wear limit in the OM646LA test.



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